From 2671ab3996672c43b02076daca5bf00c5a6f1c68 Mon Sep 17 00:00:00 2001
From: unknown author <ports@freebsd>
Date: Mon, 25 Apr 2011 01:48:46 +0200
Subject: [PATCH] Check mmap() return against correct value Signed-off-by:
 Michael Niedermayer <michaelni@gmx.at>

---
 libswscale/utils.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libswscale/utils.c b/libswscale/utils.c
index a343bf2570..6e8e40b5cc 100644
--- a/libswscale/utils.c
+++ b/libswscale/utils.c
@@ -919,7 +919,11 @@ int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter)
             c->chrMmx2FilterCode = av_malloc(c->chrMmx2FilterCodeSize);
 #endif
 
+#ifdef MAP_ANONYMOUS
+            if (c->lumMmx2FilterCode == MAP_FAILED || c->chrMmx2FilterCode == MAP_FAILED)
+#else
             if (!c->lumMmx2FilterCode || !c->chrMmx2FilterCode)
+#endif
                 return AVERROR(ENOMEM);
             FF_ALLOCZ_OR_GOTO(c, c->hLumFilter   , (dstW        /8+8)*sizeof(int16_t), fail);
             FF_ALLOCZ_OR_GOTO(c, c->hChrFilter   , (c->chrDstW  /4+8)*sizeof(int16_t), fail);